Ruby | Hash invert() function
Hash#invert() is a Hash class method which gives the hash by reverting keys to values and values to key.
Syntax: Hash.invert()
Parameter: Hash values
Return: hash by reverting keys to values and values to key
Example #1 :
# Ruby code for Hash.invert() method # declaring Hash value a = {a: 100 , b: 200 } # declaring Hash value b = {a: 100 , c: 300 , b: 200 } # declaring Hash value c = {a: 100 } # invert Value puts "Hash a invert form : #{a.invert()}\n\n" puts "Hash b invert form : #{b.invert()}\n\n" puts "Hash c invert form : #{c.invert()}\n\n" |
Output :
Hash a invert form : {100=>:a, 200=>:b} Hash b invert form : {100=>:a, 300=>:c, 200=>:b} Hash c invert form : {100=>:a}
Example #2 :
# Ruby code for Hash.invert() method # declaring Hash value a = { "a" => 100 , "b" => 200 } # declaring Hash value b = { "a" => 100 } # declaring Hash value c = { "a" => 100 , "c" => 300 , "b" => 200 } # invert Value puts "Hash a invert form : #{a.invert()}\n\n" puts "Hash b invert form : #{b.invert()}\n\n" puts "Hash c invert form : #{c.invert()}\n\n" |
Output :
Hash a invert form : {100=>"a", 200=>"b"} Hash b invert form : {100=>"a"} Hash c invert form : {100=>"a", 300=>"c", 200=>"b"}
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